Kaish 12 Pcs\. Of 1/4" Vintage Raised Mini Chicken Head Knobs Small Size Guitar KAISH 12pcs 1/4" Vintage Raised Mini Chicken Head Knobs Small Size Guitar Bass Potentiometer Knobs Amplifier Knob Effect Pedal Chickenhead Knobs with Set Screw Red KAISH quality universal mini raised chicken head knobs with 1/4" inner diameter brass insert to fit most potentiometers in the market The set screws in the knobs are long enough to clamp down on smaller shaft pots. They fit 18 coarse splines or 24 fine splines split shaft pots, 1/4"(6.35mm) or 15/64"(6mm) solid shaft pots, 15/64"(6mm) D-Shaft pots as well as other pots which shaft diameter are smaller than 1/4" Dimension: 29/32"(23mm) Length * 5/8"(16mm) Width * 35/64"(14mm) Height Well built vintage looking knobs with brass insert Package includes 12pcs Chicken-Head knobs and a wrench